docs links

Author: alexfauquette

docs/data/migration/migration-charts-v7/migration-charts-v7.md

@@ -16,7 +16,7 @@ With the v8 you can now:
 
 - Have access to the charts internal outside of the SVG by using the `ChartDataProvider` (see the [new composition docs](/x/react-charts/composition/#structural-components)).
 - Easily customize the legend since it's now an HTML element, and not a SVG one (see the [new legend docs](/x/react-charts/legend/#customization)).
-- Simplified customization of the tooltip with a [new DX](#renaming-tooltip-slots-and-props) and [more demos](/x/react-charts/tooltip/#overriding-content-2).
+- Simplified customization of the tooltip with a [new DX](#renaming-tooltip-slots-and-props) and [more demos](/x/react-charts/tooltip/#creating-a-tooltip).
 
 :::success
 This guide is also available in <a href="https://raw.githubusercontent.com/mui/mui-x/refs/heads/master/docs/data/migration/migration-charts-v7/migration-charts-v7.md" target="_blank">Markdown format</a> to be referenced by AI tools like Copilot or Cursor to help you with the migration.